128572942693 has 8 divisors (see below), whose sum is σ = 138556556768. Its totient is φ = 118602669744.

The previous prime is 128572942681. The next prime is 128572942703. The reversal of 128572942693 is 396249275821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128572942693 - 2⁹ = 128572942181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128572942493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3315255 + ... + 3353812.

It is an arithmetic number, because the mean of its divisors is an integer number (17319569596).

Almost surely, 2^128572942693 is an apocalyptic number.

128572942693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128572942693 is a deficient number, since it is larger than the sum of its proper divisors (9983614075).

128572942693 is a wasteful number, since it uses less digits than its factorization.

128572942693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670563.

The product of its digits is 13063680, while the sum is 58.

The spelling of 128572942693 in words is "one hundred twenty-eight billion, five hundred seventy-two million, nine hundred forty-two thousand, six hundred ninety-three".